CN104803568B - For the feed arrangement and its method of work of oil field waste processing system - Google Patents

Abstract

A feeding device for an oilfield waste treatment system, comprising a main pipe and a plurality of branch pipes, the front ends of the branch pipes are connected to the rear end of the main pipe, and the rear ends of the branch pipes are connected to corresponding heating chambers, A main mud pump is installed on the main pipe, and the main mud pump is a displacement pump, and branch valves are installed on the branch pipes. The feeding device used in the oilfield waste treatment system uses a volumetric pump for pumping, which can not only realize the transportation and distribution of materials with high fluidity, but also realize the metering of the feed, so that the materials sent into the heating chamber The moderate amount can not only ensure the complete material treatment, but also make the use of heat energy generated by the burner more efficient and improve the treatment efficiency. Through the measurement of the calibration port and the adjustment of the branch regulating valve, the material can be fed into the heating chamber at a constant speed for a long time, so that the waste treatment operation is continuous and the work efficiency is further improved.

Description

Feeding device and working method for oilfield waste treatment system

technical field

The invention relates to an oilfield waste treatment technology, in particular to a feeding device and a working method for the oilfield waste treatment system.

Background technique

With the increasing development of unconventional energy such as shale gas in the country, oilfield wastes such as waste oil-based mud and oily drilling cuttings continue to be produced and accumulated in large quantities. In oil and gas exploration, development and production, waste oil-based mud and oily drilling cuttings Improper disposal of oilfield waste, such as oilfield waste, will cause serious pollution of water resources and soil, and restrict development progress.

The current processing equipment for oilfield waste treatment mainly sends oilfield waste into the heating chamber through the feeding device, and the heating chamber is placed in the combustion chamber. The air and the shell of the heating chamber perform convective heat exchange, indirectly heating the oil field waste in the heating chamber, so that the water and oil contained in the oil field waste gradually evaporate, and the evaporated water vapor and oil gas entrained with a small amount of dust are drawn out for condensation Separation and purification treatment, water, oil and non-condensable gas are recovered, and the solid phase residue that has completed thermal desorption is discharged from the discharge end of the heating chamber, and is re-wetted or solidified, and finally discharged for storage and transportation to complete the treatment.

At present, the feeding device for feeding oilfield waste into the heating chamber is mainly a belt or screw feeder, which occupies a large area and is not suitable for oilfield waste with a large degree of liquid state, and the conveying speed and volume are difficult to control. If the speed is fast, there will be too much material in the heating chamber, which will easily cause insufficient heating and incomplete treatment of the material; if the conveying speed is slow, it will be difficult to efficiently use the high-temperature flue gas generated by the burner, and the energy utilization efficiency will be low.

Contents of the invention

The present invention aims at the deficiencies of the above-mentioned prior art, and designs a feeding device and its working method for an oil field waste treatment system.

The feeding device used in the oilfield waste treatment system of the present invention includes a main pipe and a plurality of branch pipes, the front ends of the branch pipes are connected to the rear end of the main pipe, and the rear ends of the branch pipes are connected to corresponding heating chambers , a main mud pump is installed on the main pipe, the main mud pump is a displacement pump, and branch valves are installed on the branch pipes.

Preferably, branch regulating valves are installed on the branch pipes, the branch regulating valves are located on the front side of the branch valves, calibration pipes are installed on the branch pipes, the front ends of the calibration pipes are connected to the branch pipes, The connecting point of the calibration pipe and the branch pipe is located between the branch regulating valve and the branch valve, and the calibration valve is installed on the calibration pipe.

Preferably, branch mud pumps are installed on the branch pipes, and the branch mud pumps are positive displacement pumps located in front of the branch valves.

Preferably, a filter is installed on the main pipe.

A working method for a feeding device of an oilfield waste treatment system, the steps are as follows:

(1) Open the branch regulating valve of each branch pipe and the calibration valve of each calibration pipe, and close the branch valve of each branch pipe.

(2) Use the main mud pump to transport the material through the main pipe to each branch pipe and discharge it from the calibration pipe.

(3) After each calibration tube starts to discharge materials, measure the amount of material discharged by each calibration tube within a set time.

(4) Adjust the branch regulating valves of each branch pipe so that the calibration pipes of each branch pipe discharge the same amount of material within the set time.

(5) Close the calibration valve of each calibration pipe, and open the branch valve of each branch pipe, so that the material is sent into the corresponding heating chamber through the branch pipe.

The beneficial effects of the present invention are: the feeding device used in the oil field waste treatment system adopts a positive displacement pump for pumping, which can not only realize the transportation and distribution of materials with high fluidity, but also realize the metering of feed materials, so that The amount of material sent into the heating chamber is moderate, which not only ensures complete material treatment, but also makes the use of heat generated by the burner more efficient and improves the processing efficiency. Through the measurement of the calibration port and the adjustment of the branch regulating valve, the material can be fed into the heating chamber at a constant speed for a long time, so that the continuity of the waste treatment operation is strong, and the work efficiency is further improved.

The filter installed on the main pipe filters the material to remove impurities to a certain extent to ensure the smooth flow of the material and avoid large fluctuations in the material conveying speed, resulting in insufficient or too much material sent into the heating chamber.

The flow rate of materials in each branch pipe can be adjusted at the same time by using the calibration pipe and the branch regulating valve, so that each branch pipe can transport materials to their corresponding heating chambers at the same time at the same time, which improves the efficiency and effect of processing operations. When measuring the calibration pipe for adjusting the branch pipe, various detection methods can be used for the material discharged from the calibration pipe, which is highly flexible and easy to operate.

Description of drawings

Accompanying drawing 1 is the structural representation of embodiment 1 of the present invention;

Accompanying drawing 2 is the structural representation of embodiment 2 of the present invention;

Accompanying drawing 3 is the structure schematic diagram of embodiment 3 of the present invention.

detailed description

The feeding device used in the oilfield waste treatment system of the present invention is shown in Figures 1 to 3 .

Embodiment one:

As shown in Figure 1, it includes a main pipe 1 and a plurality of branch pipes 2, the front ends of the branch pipes 2 are connected to the rear end of the main pipe 1, and the rear ends of the branch pipes 2 are connected to corresponding heating chambers 3, the A main mud pump 4 is installed on the main pipe 1, and the main mud pump 4 is a displacement pump, and branch valves 5 are installed on the branch pipes 2 .

When in use, first open the branch valve 5 on one branch pipe 2, and then close the branch valves 5 on the other branch pipes 2. The main mud pump 4 works to pump the material through the main pipe 1 to the corresponding branch pipe 2 and then into the Corresponding to the heating chamber 3.

After the main mud pump 4 runs for a set time T, close the opened branch valve 5, and then open the branch valve 5 on the next branch pipe 2, so that the material is pumped into the heating chamber 3 corresponding to the next branch pipe 2 , the main mud pump 4 also runs for the same set time T, then closes the corresponding branch valve 5, and then opens the branch valve 5 on the next branch pipe 2, and so on, so that each branch pipe 2 will flow to the corresponding The same amount of materials are fed into the heating chamber 3 successively.

Since the main mud pump 4 is a positive displacement pump, the amount of material conveyed by each revolution or each stroke is constant, and the branch valve on each branch pipe 2 is opened for the same set time T, which can make each branch pipe 2. The amount of material delivered to the corresponding heating chamber 3 is the same, and the feed amount can be calculated by monitoring the number of revolutions or strokes of the main mud pump 4.

Embodiment two:

As shown in Figure 2, it has the same structure as that of Embodiment 1, and the difference technical feature is that: the branch pipe 2 is equipped with a branch regulating valve 6, and the branch regulating valve 6 is located at the front side of the branch valve 5, The branch pipe 2 is equipped with a calibration pipe 7, the front end of the calibration pipe 7 is connected to the branch pipe 2, and the connection point between the calibration pipe 7 and the branch pipe 2 is located between the branch regulating valve 6 and the branch valve 5. A calibration valve 8 is installed on the pipe 7 .

When in use, close the branch valve 5 of each branch pipe 2, and open the branch regulating valve 6 and calibration valve 8 on each branch pipe 2, use the main mud pump 4 to transport the material through the main pipe 1 to each branch pipe 2, and Discharge from each calibration tube 7. After each calibration tube 7 starts to discharge the material, the amount of material discharged by each calibration tube 7 within the set time X is measured. Adjust the branch regulating valve 6 of each branch pipe 2, so that the calibration pipe 7 of each branch pipe 2 discharges the same amount of material within the set time X. Then close the calibration valve 8 of each calibration pipe 7, and open the branch valve 5 of each branch pipe 2, so that the material is sent into the corresponding heating chamber 3 through the branch pipe 2. At this time, the feeding speed of each heating chamber 3 is the same and moderate, which can ensure that the materials are completely processed and improve energy utilization efficiency at the same time.

When measuring the materials discharged from the calibration pipe 7, devices such as containers and instruments can be used to measure data such as volume and weight.

Embodiment three:

As shown in Figure 3, it has the same structure as that of Embodiment 1, and the different technical feature is that branch mud pumps 9 are installed on the branch pipes 2, and the branch mud pumps 9 are also positive displacement pumps located in the branch pipes. Front side of valve 5.

The displacements of the branch mud pumps 9 are all the same, and are all smaller than the main mud pump 4 .

When in use, the main mud pump 4 transports the material to each branch pipe 2 through the main pipe 1, and then the branch mud pump 9 on each branch pipe 2 pumps the material into each heating chamber 3.

Since the branch mud pump 9 is a positive displacement pump, the amount of material delivered by each revolution or each stroke of its operation is constant. During the working process, the motor frequency of each branch mud pump 9 is maintained at the same value, and the displacement of the main mud pump 4 must be matched with the total intake of each branch mud pump. The amount of material entering each heating chamber is the same and moderate, ensuring that the material is completely processed, and at the same time improving energy utilization efficiency.

Because both embodiment two and embodiment three can simultaneously utilize a plurality of branches to carry out feeding for a plurality of heating cavities 3, so in embodiment two and embodiment three, a filter 10 is installed on the main pipe 1, so that the material enters each Before the branch pipe 2, it is filtered to remove impurities to a certain extent, so that the material flows smoothly, and avoids large fluctuations in the material delivery speed of each branch pipe 2, resulting in insufficient or too much material sent into the heating chamber 3, ensuring that the material is Complete treatment while improving energy efficiency.

Claims (3)

1. a kind of feed arrangement for oil field waste processing system, it is characterised in that including supervisor (1) and multiple branched pipe (2), rear end of the front end of the branched pipe (2) all with supervisor (1) is connected, and the rear end of the branched pipe (2) all connects corresponding Heating chamber (3), is provided with main slush pump (4) on the supervisor (1), described main slush pump (4) is displacement pump, the branched pipe (2) branch valve (5) is fitted with, branch road regulating valve (6) is fitted with the branched pipe (2), branch road regulating valve (6) is located at The front side of the branch valve (5), is fitted with calibration pipe (7), the front end of calibration pipe (7) and branched pipe on the branched pipe (2) (2) it is connected, the tie point of calibration pipe (7) and branched pipe (2) is located between branch road regulating valve (6) and branch valve (5), the calibration Calibrating valve (8) is installed on pipe (7).

2. the feed arrangement for oil field waste processing system according to right wants ball 1, it is characterised in that described master Filter (10) is installed on pipe (1).

3. the method for work of the feed arrangement of oil field waste processing system is used for described in a kind of claim 1, it is characterised in that Step is as follows：

(1) the branch road regulating valve of each branched pipe and the calibrating valve of each calibration pipe are opened, and closes the branch of each branched pipe Valve；

(2) material is transported in each branched pipe by supervisor using main slush pump, and is discharged from calibration pipe；

(3) after each calibration pipe all starts discharge material, the inventory that each calibration pipe is discharged in setting time is counted Amount；

(4) the branch road regulating valve of each branched pipe is adjusted, the material for making the calibration pipe of each branched pipe be discharged in setting time Amount is identical；

(5) calibrating valve of each calibration pipe is closed, and opens the branch valve of each branched pipe, material is sent into by branched pipe right In answering heating chamber.